Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries

In this work, we developed highly porous activated carbon (AC) materials with micro/meso porosity through carbonizing rice husk and treating them with K2CO3. Elemental sulfur was then loaded to the micropores through a solution infiltration method to form rice husk-derived activated carbon (RHAC)@...

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Main Authors: Mai, Thanh-Tung, Vu, Duc-Luong, Huynh, Dang- Chinh, Wu, Nae-Li, Le, Anh-Tuan
Format: Article
Language:English
Published: Elsevier 2019
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Online Access:http://repository.vnu.edu.vn/handle/VNU_123/67720
https://doi.org/10.1016/j.jsamd.2019.04.009
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Institution: Vietnam National University, Hanoi
Language: English
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spelling oai:112.137.131.14:VNU_123-677202019-10-11T03:15:33Z Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries Mai, Thanh-Tung Vu, Duc-Luong Huynh, Dang- Chinh Wu, Nae-Li Le, Anh-Tuan Rice husk Cathode material Carbonization process Activated carbon Lithium-sulfur batteries In this work, we developed highly porous activated carbon (AC) materials with micro/meso porosity through carbonizing rice husk and treating them with K2CO3. Elemental sulfur was then loaded to the micropores through a solution infiltration method to form rice husk-derived activated carbon (RHAC)@S composite materials. The as-prepared RHAC@S composites with 0.25 mg cm 1 and 0.38 mg cm 1 of sulfur loading were tested as cathodes for lithium-sulfur (Li-S) batteries. The 0.25 mg cm 1 sulfur loaded sample showed an initial discharge capacity of 1080 mA h/g at a 0.1 C rate. After 50 cycles of charge/ discharge tests at the current density of 0.2 C, the reversible capacity is maintained at 312 mA h/g. The RHAC material delivered a capacity of more than 300 mA h/g at a current density of 1.7 C. These results demonstrate that the RHAC porous materials are very promising as cathode materials for the development of high-performance Li-S batteries 2019-10-11T03:15:33Z 2019-10-11T03:15:33Z 2019 Article Mai, T. T , et al. (2019). Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries. Journal of Science: Advanced Materials and Devices 4 (2019) 223-229 2468-2179 http://repository.vnu.edu.vn/handle/VNU_123/67720 https://doi.org/10.1016/j.jsamd.2019.04.009 en Journal of Science: Advanced Materials and Devices; application/pdf Elsevier
institution Vietnam National University, Hanoi
building VNU Library & Information Center
country Vietnam
collection VNU Digital Repository
language English
topic Rice husk
Cathode material
Carbonization process
Activated carbon
Lithium-sulfur batteries
spellingShingle Rice husk
Cathode material
Carbonization process
Activated carbon
Lithium-sulfur batteries
Mai, Thanh-Tung
Vu, Duc-Luong
Huynh, Dang- Chinh
Wu, Nae-Li
Le, Anh-Tuan
Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries
description In this work, we developed highly porous activated carbon (AC) materials with micro/meso porosity through carbonizing rice husk and treating them with K2CO3. Elemental sulfur was then loaded to the micropores through a solution infiltration method to form rice husk-derived activated carbon (RHAC)@S composite materials. The as-prepared RHAC@S composites with 0.25 mg cm 1 and 0.38 mg cm 1 of sulfur loading were tested as cathodes for lithium-sulfur (Li-S) batteries. The 0.25 mg cm 1 sulfur loaded sample showed an initial discharge capacity of 1080 mA h/g at a 0.1 C rate. After 50 cycles of charge/ discharge tests at the current density of 0.2 C, the reversible capacity is maintained at 312 mA h/g. The RHAC material delivered a capacity of more than 300 mA h/g at a current density of 1.7 C. These results demonstrate that the RHAC porous materials are very promising as cathode materials for the development of high-performance Li-S batteries
format Article
author Mai, Thanh-Tung
Vu, Duc-Luong
Huynh, Dang- Chinh
Wu, Nae-Li
Le, Anh-Tuan
author_facet Mai, Thanh-Tung
Vu, Duc-Luong
Huynh, Dang- Chinh
Wu, Nae-Li
Le, Anh-Tuan
author_sort Mai, Thanh-Tung
title Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries
title_short Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries
title_full Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries
title_fullStr Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries
title_full_unstemmed Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries
title_sort cost-effective porous carbon materials synthesized by carbonizing rice husk and k2co3 activation and their application for lithium-sulfur batteries
publisher Elsevier
publishDate 2019
url http://repository.vnu.edu.vn/handle/VNU_123/67720
https://doi.org/10.1016/j.jsamd.2019.04.009
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